<template>
  <div class="app-container">
    <!--顶部Header区域-->
<mt-header fixed title="黑马程序员Vue项目">
  <span  slot="left" @click="goBack" v-show="flag">
    <mt-button icon="back">返回</mt-button>
  </span>
</mt-header>
    
    <!--中间路由router-view区域-->

    <transition>
		<router-view></router-view>
	</transition>
   
    <!--底部Tabbar区域-->
<nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item1" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item1" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item1" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart "><span class="mui-badge" id="badge">{{$store.getters.getAllCount}}</span></span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item1" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>
  </div>
</template>

<script>
export default{
  data(){
    return {
      flag:false,
    }
  },
  created(){
    this.flag = this.$route.path === "/home"? false : true;
  },
  methods:{
    goBack(){
      //点击后退
      this.$router.go(-1)
    }
  },
  watch: {
    "$route.path":function(newVal){
      if(newVal === '/home'){
        this.flag = false;
      }else{
        this.flag = true;
      }
    }
  }
}
</script>


<style lang="scss" scoped>
.mt-header{
  z-index: 99;
}
.app-container{
  padding-top: 40px;
  padding-bottom: 50px;
  overflow-x: hidden;
}
.v-enter
{
	opacity: 0;
	transform: translateX(100%);
}
.v-leave-to{
	opacity: 0;
	transform: translateX(-100%);
	position: absolute;
}

.v-enter-active,
.v-leave-active{
	transition: all 0.5s ease;
}
.mui-bar-tab .mui-tab-item1.mui-active {
    color: #007aff;
}
.mui-bar-tab .mui-tab-item1 {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}
.mui-bar-tab .mui-tab-item1 .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}
.mui-bar-tab .mui-tab-item1 .mui-icon~.mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
</style>
